So is this a proposal about what the prime minister thinks should change, or is it an actual change?
Like, I've had a lifetime of hearing US presidents say all sorts of things they wanted to be true, but which never happened - as Roosevelt called it, a "bully pulpit" ("a terrific platform from which to advocate an agenda" quoting Wikipedia).
My reading (thanks Google Translate!) is that's what's going on here.
I can't find anything in the English language press, which I think would be the case if this were a new law being enacted.